Whether it’s a dull ache or sharp spasm ... be referred to other body areas such as the back, shoulder, or jaw.” Pain between the shoulder blades isn’t necessarily a sign of a heart attack.
Although there can be several origins of pain that presents itself in the front, back and ... within the shoulder, connecting the upper arm (humerus) to the shoulder blade (scapula).
Pain in the right shoulder and arm can ... You should feel this stretch in the back of your right shoulder. To do it: Gently pull your right arm across your chest as far as you can.